This Java Tutorial is designed for beginners as well as experienced professionals. Whether you’re looking to learn the basics of Java or its advanced concepts, this Java tutorial is the perfect resource for you.
What is Java?
Developed by Sun Microsystems in 1995, Java is a highly popular, object-oriented programming language. This platform independent programming language is utilized for Android development, web development, artificial intelligence, cloud applications, and much more.
In this tutorial, we will cover everything from the basics of Java syntax to advanced topics like object-oriented programming and exception handling. So, by the end of this tutorial, you will have a strong understanding of Java and be ready to start writing your own Java applications. So let’s get started on this comprehensive Java programming tutorial!
Java Online Compiler
// A Java program to print "Hello World"
public class GFG {
public static void main(String args[])
{
System.out.println("Hello World");
}
}
Output:
Hello World
Java Programming Related Resources
Overview of Java
Basics of Java
Input/Output in Java
Flow Control in Java
Operators in Java
Strings in Java
Arrays in Java
OOPS in Java
Inheritance in Java
Abstraction in Java
Encapsulation in Java
Polymorphism in Java
Constructors in Java
Methods in Java
Interfaces in Java
Wrapper Classes in Java
Keywords in Java
Access Modifiers in Java
Memory Allocation in Java
Classes of Java
Packages in Java
Collection Framework in Java
List in Java
Queue in Java
Map in Java
Set in Java
Exception Handling in Java
Multithreading in Java
Synchronization in Java
File Handling in Java
Java Regex
Java IO
Java Networking
Java SE 8 Features
Java Date & Time
Java JDBC
Java Miscellaneous
Interview Questions on Java
Features of Java
Java is one of the most popular and widely used programming languages.
- Java has been one of the most popular programming languages for many years.
- Java is Object Oriented. However, it is not considered as pure object-oriented as it provides support for primitive data types (like int, char, etc)
- The Java codes are first compiled into byte code (machine-independent code). Then the byte code runs on Java Virtual Machine (JVM) regardless of the underlying architecture.
- Java syntax is similar to C/C++. But Java does not provide low-level programming functionalities like pointers. Also, Java codes are always written in the form of classes and objects.
- Java is used in all kinds of applications like Mobile Applications (Android is Java-based), desktop applications, web applications, client-server applications, enterprise applications, and many more.
- When compared with C++, Java codes are generally more maintainable because Java does not allow many things which may lead to bad/inefficient programming if used incorrectly. For example, non-primitives are always references in Java. So we cannot pass large objects (like we can do in C++) to functions, we always pass references in Java. One more example, since there are no pointers, bad memory access is also not possible.
- When compared with Python, Java kind of fits between C++ and Python. The programs are written in Java typically run faster than corresponding Python programs and slower than C++. Like C++, Java does static type checking, but Python does not.
Applications of Java
Here in this section, we have added some of the applications that were developed using the Java programming language.
- Mobile Applications
- Desktop GUI Applications
- Artificial intelligence
- Scientific Applications
- Cloud Applications
- Embedded Systems
- Gaming Applications
Prerequisites to Learn Java
Well, in this article, we have linked all our best resources to teach you the core of the Java programming language in easy and simple way. But before diving into the world of Java programming it is expected that readers are familiar with the fundamentals of any programming language. So that he/she can easily understand variables, instructions, syntax, and other terms.
Java Jobs & Opportunity
According to report of Statista.com Java is most demanded programming languages after JavaScript by recruiters worldwide in 2023. Major MNC companies are recruiting Java Programmers.
Java Programing Language Quiz
Quizzes on Java Language
Java Programming Tutorial: FAQ
Q1. Why use Java ?
Java is simple to learn programming language because doesn’t contain concepts like : Pointers and operator overloading and it is secure and portable.
Q2. What are the major concepts in Java?
There are 4 major concept in Java that is abstraction, encapsulation, polymorphism, and inheritance. Along with this Java also works with three OOPs concept
Q3. How Java different to C++ ?
| C++ |
JAVA |
| C++ is platform dependent. |
Java is platform independent. |
| C++ uses compiler only. |
Java uses compiler and interpreter both. |
| C++ support pointers and operator overloading. |
Java doesn’t support pointers and operator overloading concept. |
| C++ not support multithreading concept. |
Java supports multithreading concept. |
Q4. Why Java is so popular programming language?
Java is based on object model hence it is one the popular programming language.
Q5. What are the scope of Java Technologies for Web Applications?
Java Technologies for Web Applications are a set of Java-based technologies that are used to develop web applications. These technologies include:
- Java Servlet API
- JavaServer Pages
- JavaServer Faces
- Enterprise JavaBeans
- JDBC (Java Database Connectivity)
- Java Messaging Service (JMS):
- JavaMail API:
- JAX-WS